Grease Dance
50 Achievements
PS3
Oldie But a Goodie
Unlock a Classic Grease minigame
70.3%
How to unlock the Oldie But a Goodie achievement in Grease Dance - Definitive Guide
Beanpotter
TrueAchievements
TrueAchievements
All the mini games are locked to begin with. To unlock your first you'll need to 'dance' 3 times. Go in to dance mode and let 3 tracks run till the end. Doesn't matter how well you do. The first mini game will then unlock.
leptonic
Please refer Master of Unlocking for more information.